Sample analyzer, blood coagulation analyzer, sample analysis method, and computer program

摘要

Solving Means: A preparing means 11 which prepares a measurement sample by mixing a sample and reagent, a measuring means 12 which irradiates light on the measurement sample and obtains time series data representing the change over time of the optical data values, and a controlling means 20. The controlling means 20 sets the start point detection interval in part of the acquisition period of the time series data obtained by the measuring means, sets the start point detection interval by detecting a data value within the set start point detection interval as the start point of the interval during which the time series data transition linearly when the data values contained in the set start point detection interval satisfy a first evaluation criteria related to the distribution of the data values, and sequentially shifts one period backward from the set start point detection interval until the start point is detected when the data values contained in the set start point detection interval do not satisfy the first evaluation criteria, detects a data value after the start point which satisfies a second evaluation criteria related to linearity as the end point of the interval, and analyzes the concentration of a target material contained in the sample based on a value representing the slope of a regression line which is based on the data values included in the interval from the start point to the endpoint.